Re: [Xen-users] To Xen or not to Xen

[Tim Post <tim.post@xxxxxxxxxxxxxxx>]

I think you'd find your best performance just by breaking up LAMP, if
thats the intended use of the rig :) 

Keeping mysql and Apache (or your web server of choice) on different
dom-u's means all services have easier times finding contiguous blocks
of cache to take to keep more child servers active during peak load
times. 

I'd actually create 3 guests, and just leave the scheduling at default

2 of them web servers, using a central SQL server, for a total of 3.

You can also play around with scheduling later to tweak and learn. I try
to keep everything that malloc()'s much more than it needs (like
apache / mysql) on different dom-u's, whenever possible.

Another config would be use 2 guests, one for sql, one for everything
else. 'Elbow room' in cache is the idea, but having a failover for one
(or both) would be ideal. 

HTH

-Tim

On Wed, 2006-08-30 at 11:02 -0400, François Levasseur wrote:
> Hi
> 
> I have a server, Dual Opteron 265 (dual core), witch allow me to have
> 4 *virtual* CPUs. The server is dedicated to serving dynamic web page.
> 
> I have 2 configurations in my mind:
> 
> 1. I install one operating system; 
> 2. I install Xen with 2 virtuals machines, each one with one cpu (dual
> core).
> 
> I'm not an expert so I'd like to know what is the best setup to get
> the maximun of responsivness and speed from this server.
> 
> Thank you
> 
> Frank
> 
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